Don't bother trying to auth u1ms urls, as we auth on checkout anyway
Build against a system liboauth rather than shipping old copies
Replace the COPYING files in the correct manner, with the LGPLv3 copy
Fix all the license headers to properly refer to LGPLv3 and Canonical Ltd.

Don't register the custom handler for libsoup for now
Delay the initial loading of the connecting page, to avoid a race condition
Add a delay to the initial main store page loading, to avoid a race
Move progress bar creation, and notify signal connect, to avoid racing
Avoid an unneeded second call to get the URI from webkit in nav request